BUFFALO, NY — April 23, 2026 — A new research paper was published in Volume 18 of Aging-US on April 7, 2026, titled “Association of epigenetic age acceleration with MRI biomarkers of aging and Alzheimer’s disease neurodegeneration.”

Researchers investigated whether men or women have fewer children. Using international datasets, they demonstrate that imbalances in population structure, particularly an increasing proportion of men, affect male fertility. While men used to have higher fertility than women globally, this has reversed, and women have and will have a higher fertility rate than men. The scientists offer recommendations to counteract the social implications of this trend.

A new study, led by researchers from the University of Tokyo, involving nearly 1,000 patients in Japan suggests that attention deficit hyperactivity disorder (ADHD)-related traits may be associated with and may contribute to chronic pain. The connection seems solid but indirect: ADHD-related traits appear to impact how people perceive pain through increased anxiety, depression and negative thought patterns. This research presents potential avenues for new tailored treatments and rehabilitation for those with ADHD and chronic pain.